rectangle
Concise Oxford English Dictionary © 2008 Oxford University Press:
rectangle/ˈrektaŋɡl/
▶noun a plane figure with four straight sides and four right angles, especially one with unequal adjacent sides.
– origin C16: from med. L. rectangulum, based on L. rectus ‘straight’ + angulus ‘an angle’.
'rectangle' also found in these Oxford entries:
